From 235246ded3f54300ef9842638e05a69b14664599 Mon Sep 17 00:00:00 2001
From: Nick Briggs <nicholas.h.briggs@gmail.com>
Date: Sat, 7 Jan 2023 16:45:37 -0800
Subject: [PATCH] Resolve warning: no previous extern declaration for
 non-static variable by making locals static.

---
 src/tty.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/tty.c b/src/tty.c
index d8b456b..f00643f 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -25,12 +25,13 @@
 #include "tty.h"
 #include "ttydefs.h"
 
-DLTTY_OUT_COMMAND *DLTTYPortCmd;
-DLTTY_IN_CSB *DLTTYIn;
-DLTTY_OUT_CSB *DLTTYOut;
+static DLTTY_OUT_COMMAND *DLTTYPortCmd;
+static DLTTY_IN_CSB *DLTTYIn;
+static DLTTY_OUT_CSB *DLTTYOut;
+
+static char *TTY_Dev;
+static int TTY_Fd = -1;
 
-char *TTY_Dev;
-int TTY_Fd = -1;
 extern fd_set LispReadFds;
 
 void tty_init(void)